July Weather in Dayton, United States

Last updated: June 24, 2025

In July, the average temperature in Dayton, United States reaches a warm 28°C (83°F), with a minimum of 19°C (67°F) and a peak at 36°C (98°F). Expect 142 mm (5.6 in) of precipitation spread across 17 days, contributing to an average humidity of 71%. Stay prepared for a mix of warmth and moisture!

July Temperature in Dayton

In July in Dayton, the average temperature is 28°C (83°F). Maximums can reach 36°C (98°F), and minimums can be as low as 19°C (67°F). This climate makes it an ideal time for travelers seeking warm weather and outdoor activities.

July Weather in Dayton: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Dayton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dayton, July typically has an average temperature of 28°C (83°F), with highs reaching up to 36°C (98°F) and lows dropping to around 19°C (67°F).

Data source: Temperature data for Dayton generated using information from the Copernicus Climate Change Service.

July Precipitation in Dayton

In Dayton in July, the total precipitation amount is 142 mm (5.6 in) over the course of 17 days.

July Precipitation Trends in Dayton

The chart displays monthly precipitation patterns in Dayton, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Dayton, July typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 17 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

July Humidity in Dayton

In Dayton in July, humidity is 71%. With an average temperature of 28°C (83°F), this humidity feels like a warm, enveloping blanket that can make traveling quite uncomfortable if you're not prepared for the stickiness and sweat that accompany such conditions.

July Average Humidity in Dayton

This chart illustrates the average monthly humidity levels in Dayton, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Dayton is approximately 71%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Dayton

In Dayton in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Dayton.

Maximum UV Index Levels in Dayton for July

The chart shows the monthly maximum UV Index (UVI) for Dayton in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Dayton typically reaches 11, which falls under the extreme exposure category.

Data source: Dayton July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How July Weather in Dayton Compares to Other Months

Weather in Dayton varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Dayton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Dayton, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	93 mm (3.7 inches)	78%	moderate
February Weather	14°C (58°F)	102 mm (4.0 inches)	81%	very high
March Weather	18°C (65°F)	100 mm (3.9 inches)	76%	very high
April Weather	21°C (69°F)	106 mm (4.2 inches)	79%	extreme
May Weather	25°C (77°F)	188 mm (7.4 inches)	79%	extreme
June Weather	27°C (81°F)	171 mm (6.7 inches)	74%	extreme
July Weather	28°C (83°F)	142 mm (5.6 inches)	71%	extreme
August Weather	28°C (83°F)	208 mm (8.2 inches)	68%	extreme
September Weather	26°C (80°F)	217 mm (8.5 inches)	73%	very high
October Weather	22°C (72°F)	116 mm (4.6 inches)	75%	very high
November Weather	16°C (62°F)	79 mm (3.1 inches)	78%	high
December Weather	14°C (58°F)	117 mm (4.6 inches)	84%	moderate